... on all vehicle including diesel 6. Save Up to $500 to $1, 500 a Year and more 7. ... powerful magnetic field causes these clumps of fuel molecules to be charged with a single polarity, thus they repel ... positive results on all materials, if you can, choose a metal fuel line even if it is a ... Noticeable improvement may take up to four tanks of fuel and, for optimum results to be achieved, please allow 1, ...